SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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CaO
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Ca2O
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none
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None of the above
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Detailed explanation-1: -What is Calcium Oxide (CaO)? Calcium oxide, commonly known as lime, is a chemical compound with the formula CaO. Calcium oxide, also known as quicklime, is an alkaline substance that has been in use since the medieval age.
Detailed explanation-2: -The formula of Calcium oxide is Ca 2 O 2 .
Detailed explanation-3: -The calcium oxide is formed from a calcium atom and an oxygen atom. The chemical formula or the molecular formula of the calcium oxide is written as CaO. The calcium oxide is known as quicklime and it is one of the oldest chemical compounds. The molecule of calcium oxide CaO contains a calcium cation and oxide anion.
Detailed explanation-4: -The chemical formula for calcium oxide is CaO and not Ca2O2. Comment. The chemical formula of calcium oxide is CaO because writing formula of a compound, valencies are divided by highest common factor. Similarly formula for aluminium nitrate is AlN and not Al3N3.